CN113352882B - 车辆 - Google Patents

车辆 Download PDF

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Publication number
CN113352882B
CN113352882B CN202110242803.8A CN202110242803A CN113352882B CN 113352882 B CN113352882 B CN 113352882B CN 202110242803 A CN202110242803 A CN 202110242803A CN 113352882 B CN113352882 B CN 113352882B
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China
Prior art keywords
driving force
driving
distribution ratio
drive
main
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CN202110242803.8A
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CN113352882A (zh
Inventor
大朏勇人
安藤聪
大礒桂一
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
    • B60K17/356—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having fluid or electric motor, for driving one or more wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
    • B60K17/354—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having separate mechanical assemblies for transmitting drive to the front or to the rear wheels or set of wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/02—Arrangement or mounting of electrical propulsion units comprising more than one electric motor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/02—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of clutch
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
    • B60K17/08—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing of mechanical type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/24—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/44—Series-parallel type
    • B60K6/442—Series-parallel switching type
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
    • B60K6/52—Driving a plurality of drive axles, e.g. four-wheel drive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
    • B60L15/2045—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed for optimising the use of energy
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    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/10—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines
    • B60L50/16—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines with provision for separate direct mechanical propulsion
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    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/61—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
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    • B60—VEHICLES IN GENERAL
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    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
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    • B60L2260/00—Operating Modes
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    • B60L2260/26—Transition between different drive modes
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Abstract

提供能够进一步提高能量消耗效率的车辆。车辆(V)具备：主驱动单元(DU1)，其输出驱动前轮(FWR)的主驱动力；次驱动单元(DU2)，其输出驱动后轮(RWR)的次驱动力；以及控制单元(CTR)，其控制主驱动单元(DU1)及次驱动单元(DU2)的输出。主驱动单元(DU1)具有主驱动马达(MOT1)。次驱动单元(DU2)具有次驱动马达(MOT2)。控制单元(CTR)具有设定主驱动力与次驱动力之间的驱动力分配比率的驱动力分配比率设定部(75)。驱动力分配比率设定部(75)基于车辆(V)的车速(VP)和车辆(V)的要求驱动力(Freq)，以车辆(V)的电力损失成为最小的方式设定驱动力分配比率。

Description

车辆
技术领域
本发明涉及一种车辆。
背景技术
以往，已知有一种驱动前轮及后轮这双方的车辆，所谓的四轮驱动车辆。四轮驱动车辆经常用于要求更高的动力性能、更优异的差路行驶性的车辆。
另一方面，由于近年来环境意识的提高，对四轮驱动车辆也要求更高的能量消耗效率。于是，例如，专利文献1中公开了一种车辆，该车辆具备借助变速装置而驱动后轮的发动机、以及借助能够在接通状态与断开状态之间进行切换的离合器而驱动前轮的马达，该车辆能够在仅驱动发动机的发动机两驱模式、仅驱动马达的马达两驱模式、以及驱动发动机和马达这两者的混合动力四驱模式之间进行切换。而且，通过根据需要有效活用马达两驱模式等，能够实现环境负担的减少和燃料费用的降低。
在先技术文献
专利文献1：日本特开2017-105243号公报
然而，在专利文献1的车辆中，由于仅能够在发动机两驱模式、马达两驱模式、混合动力四驱模式之间进行切换，因此在提高能量消耗效率方面存在界限。
发明内容
本发明提供一种能够进一步提高能量消耗效率的车辆。
本发明是一种车辆，其中，
所述车辆具备：
主驱动单元，其输出驱动前轮及后轮中的一方的主驱动力；
次驱动单元，其输出驱动所述前轮及所述后轮中的另一方的次驱动力；以及
控制单元，其控制所述主驱动单元及所述次驱动单元的输出，
所述主驱动单元具有至少一个主驱动用旋转电机，
所述次驱动单元具有至少一个次驱动用旋转电机，
所述控制单元具有对所述主驱动力与所述次驱动力之间的驱动力分配比率进行设定的驱动力分配比率设定部，
所述控制单元以所述主驱动力和所述次驱动力成为由所述驱动力分配比率设定部设定的所述驱动力分配比率的方式对所述主驱动单元及所述次驱动单元的输出进行控制，
所述驱动力分配比率设定部基于所述车辆的车速和所述车辆的要求驱动力，以所述车辆的电力损失成为最小的方式设定所述驱动力分配比率。
发明效果
根据本发明，驱动力分配比率设定部基于车辆的车速和车辆的要求驱动力，以车辆的电力损失成为最小的方式设定驱动力分配比率，因此能够以车辆的电力损失成为最小的方式对主驱动单元及次驱动单元进行控制，能够提高车辆的能量消耗效率。
附图说明
图1是表示本发明的一实施方式的车辆的简要结构的简要结构图。
图2是对主驱动单元处于EV行驶(电力驱动模式)时的动力及电力的流动进行说明的说明图。
图3是对主驱动单元处于串联行驶(电力驱动模式)时的动力及电力的流动进行说明的说明图。
图4是对主驱动单元处于发动机行驶(发动机驱动模式)时的动力及电力的流动进行说明的说明图。
图5是图1的车辆的控制单元的框图。
图6是表示电力驱动模式时的驱动力分配比率映射的图。
图7是表示发动机驱动模式时的驱动力分配比率映射的图。
图8是表示发动机驱动模式时的驱动力分配比率映射的变形例的图。
附图标记说明：
75 驱动力分配比率设定部；
V 车辆；
FWR 前轮；
RWR 后轮；
DU1 主驱动单元；
DU2 次驱动单元；
ENG 发动机(内燃机)；
MOT1 主驱动马达(主驱动用旋转电机)；
MOT2 次驱动马达(次驱动用旋转电机)；
CTR 控制单元；
VP 车速；
Freq 要求驱动力。
具体实施方式
以下，根据附图对本发明的车辆的一实施方式进行说明。
如图1所示，本实施方式的车辆V具备机械性地独立的主驱动单元DU1和次驱动单元DU2。需要说明的是，“机械性地独立”是指一方的动力不会通过传动轴等机械地传递给另一方。在本实施方式中，主驱动单元DU1输出主驱动力而驱动前轮FWR，次驱动单元DU2输出次驱动力而驱动后轮RWR。
车辆V还具备蓄电池BAT、电压控制部VCU和控制单元CTR。
蓄电池BAT具有串联连接的多个蓄电单体，且供给例如100～200V的高电压。蓄电单体例如是锂离子电池、镍氢电池。
电压控制部VCU使从蓄电池BAT输出的输出电压保持直流的状态升压。另外，电压控制部VCU使向蓄电池BAT充入的输入电压降压。电压控制部VCU例如是DC-DC转换器。
[主驱动单元的结构]
首先，参照图1对主驱动单元DU1的结构进行说明。
主驱动单元DU1具备发动机ENG、发电机GEN、主驱动马达MOT1、第一逆变器INV1、第二逆变器INV2、以及第一变速机构T1。主驱动马达MOT1及发电机GEN借助电压控制部VCU、第一逆变器INV1、以及第二逆变器INV2而连接至蓄电池BAT，且能够进行来自蓄电池BAT的电力供给、以及向蓄电池BAT的能量再生。需要说明的是，图1中的虚线表示电力配线，单点划线表示控制信号线。
第一逆变器INV1将直流电压转换为交流电压，并将三相电流供给到发电机GEN。另外，第一逆变器INV1将由发电机GEN发出的交流电压转换成直流电压。
第二逆变器INV2将直流电压转换为交流电压，并将三相电流供给到主驱动马达MOT1。另外，第二逆变器INV2将在电动车辆制动时主驱动马达MOT1发出的交流电压转换成直流电压。
第一变速机构T1具备彼此平行配置的输入轴21、发电机轴23、及副轴25和第一差动机构D1。
输入轴21与发动机ENG的曲轴12在同轴上排列配置。曲轴12的动力借助减震器13而传递至输入轴21。在输入轴21上设置有构成后述的发电机驱动用齿轮系的输出齿轮32。
在输入轴21中的与发动机ENG侧相反的一侧设置有构成发动机动力传递齿轮系的输出齿轮53。在输入轴21上的输出齿轮32与输出齿轮53之间设置有液压离合器CL，该液压离合器CL用于将输入轴21与输出齿轮53以能够脱离的方式连结。
发电机轴23是双重结构的旋转轴，该旋转轴具备内周轴27、以及相对于该内周轴27同心地配置在外周侧的外周轴29。在内周轴27中的发动机ENG侧设置有与输入轴21上的输出齿轮32啮合的输入齿轮34。输入轴21上的输出齿轮32和内周轴27上的输入齿轮34构成用于将输入轴21的动力传递到内周轴27的发电机驱动用齿轮系。
另外，在内周轴27的大致中央的外径侧外周轴29以能够相对旋转的方式设置。在内周轴27中的与发动机ENG侧相反的一侧安装有发电机GEN。发电机GEN具备固定于内周轴27的转子R、以及固定于未图示的壳体并与转子R的外径侧对置配置的定子S而构成。
输入轴21的驱动力借助发电机驱动用齿轮系而传递至发电机轴23的内周轴27，由此发电机GEN的转子R随着内周轴27的旋转而旋转。由此，能够用发电机GEN将来自输入轴21的驱动力转换成电力。
在外周轴29上的发动机ENG侧设置有与后述的副轴25上的输入齿轮54啮合的输出齿轮52，在外周轴29上的与发动机ENG侧相反的一侧安装有主驱动马达MOT1。主驱动马达MOT1具备固定在外周轴29上的转子R、以及固定在未图示的壳体上并与转子R的外径侧对置配置的定子S而构成。
外周轴29上的输出齿轮52和副轴25上的输入齿轮54构成用于将外周轴29的动力传递到副轴25的马达动力传递齿轮系。因此，当用主驱动马达MOT1的驱动力使外周轴29旋转时，该旋转借助马达动力传递齿轮系而传递至副轴25。
在副轴25上，从发动机ENG侧依次设置有与第一差动机构D1的环形齿轮58啮合的输出齿轮56、以及与输入轴21上的输出齿轮53及外周轴29上的输出齿轮52啮合的输入齿轮54。输入轴21上的输出齿轮53和副轴25上的输入齿轮54构成用于将输入轴21的动力传递到副轴25的发动机动力传递齿轮系。另外，副轴25上的输出齿轮56和第一差动机构D1的环形齿轮58构成用于将副轴25的驱动力传递到第一差动机构D1的末端传动齿轮系。
借助马达动力传递齿轮系而输入到副轴25上的主驱动马达MOT1的驱动力和借助发动机动力传递齿轮系而输入到副轴25上的发动机ENG的驱动力作为主驱动单元DU1的主驱动力而输出，且借助末端传动齿轮系而传递至第一差动机构D1，并从第一差动机构D1传递至前轮FWR。
这种本实施方式的主驱动单元DU1的第一变速机构T1具备将发电机GEN与发动机ENG以能够动力传递的方式进行连接的第一传递机构41、以及将主驱动马达MOT1与前轮FWR以能够动力传递的方式进行连接的第二传递机构42。即，第一传递机构41由输入轴21、输出齿轮32、输入齿轮34、以及内周轴27构成，第二传递机构42由外周轴29、输出齿轮52、输入齿轮54、副轴25、输出齿轮56、以及第一差动机构D1构成。
另外，液压离合器CL在该第一传递机构41和第二传递机构42之间的动力传递路径被连接的状态、与第一传递路径和第二传递路径之间的动力传递路径被截断的状态之间选择性地进行切换。即，通过接合液压离合器CL来连接(锁止lockup)第一传递机构41与第二传递机构42之间的动力传递路径，且通过释放液压离合器CL来截断第一传递机构41与第二传递机构42之间的动力传递路径。在第一变速机构T1中，输入齿轮54与输入轴21上的输出齿轮53及外周轴29上的输出齿轮52啮合，因此当接合液压离合器CL时，第一传递机构41和第二传递机构42之间的动力传递路径被连接，能够进行第一传递机构41和第二传递机构42之间的动力传递。另一方面，当释放液压离合器CL时，输出齿轮53从输入轴21脱离，因此第一传递机构41和第二传递机构42之间的动力传递路径被截断，不能进行第一传递机构41和第二传递机构42之间的动力传递。
[次驱动单元的结构]
次驱动单元DU2具备次驱动马达MOT2、第三逆变器INV3、以及第二变速机构T2。次驱动马达MOT2借助电压控制部VCU及第三逆变器INV3而连接至蓄电池BAT，且能够进行来自蓄电池BAT的电力供给、以及向蓄电池BAT的能量再生。需要说明的是，图1中的虚线表示电力配线，单点划线表示控制信号线。
第二变速机构T2具备彼此平行配置的马达输出轴26和输出轴28、以及第二差动机构D2。
在次驱动单元DU2中，在次驱动马达MOT2的马达输出轴26的一端第三驱动齿轮62以一体旋转的方式安装，在与次驱动马达MOT2的马达输出轴26平行延伸的输出轴28上输出齿轮66和与第三驱动齿轮62啮合的第三从动齿轮64以与输出轴28一体旋转的方式安装。因此，次驱动马达MOT2的驱动力借助第三驱动齿轮62、第三从动齿轮64而传递至输出轴28，并且传递至输出轴28的驱动力从输出齿轮66经由第二差动机构D2而传递至后轮RWR，相反，来自后轮RWR的驱动力经由第二差动机构D2、输出齿轮66、输出轴28、第三从动齿轮64、第三驱动齿轮62、以及马达输出轴26而传递到次驱动马达MOT2。
[主驱动单元的驱动模式]
接着，参照图2至图4对主驱动单元DU1的驱动模式进行说明。需要说明的是，图2至图4简化了与图1的主驱动单元DU1有关的结构，用虚线的箭头表示电力的流动，且用粗实线箭头表示动力的流动。
主驱动单元DU1的驱动模式具有将主驱动马达MOT1的驱动力作为主驱动力而输出的电力驱动模式、和将发动机ENG的驱动力作为主驱动力而输出的发动机驱动模式。电力驱动模式将液压离合器CL设为释放状态，并将主驱动马达MOT1的驱动力作为主驱动力而输出。电力驱动模式包括后述的EV行驶和串联行驶。发动机驱动模式使液压离合器CL为卡合状态，并将发动机ENG的驱动力设为主驱动力而输出。发动机驱动模式包括后述的发动机行驶。
<EV行驶(电力驱动模式)>
如图2所示，EV行驶使发动机ENG为非运转状态，且通过从蓄电池BAT供给的电力驱动主驱动马达MOT1。即，通过从蓄电池BAT供给的电力驱动主驱动马达MOT1，从而用主驱动马达MOT1的驱动力使发电机轴23的外周轴29旋转，该旋转借助马达动力传递齿轮系而传递到副轴25。这样传递的主驱动马达MOT1的驱动力借助末端传动齿轮系、第一差动机构D1，作为主驱动力而输出，并传递到前轮FWR。由此，能够进行EV行驶。
<串联行驶(电力驱动模式)>
如图3所示，串联行驶使发动机ENG为运转状态，且通过由发电机GEN发出的电力驱动主驱动马达MOT1。即，发动机ENG的驱动力从输入轴21借助发电机驱动用齿轮系而输入至内周轴27，从而使内周轴27旋转。由此，固定至内周轴27的发电机GEN的转子R旋转，且用发电机GEN进行发电。由发电机GEN发出的电力被供给到主驱动马达MOT1，且用该电力驱动主驱动马达MOT1。用主驱动马达MOT1的驱动力使发电机轴23的外周轴29旋转，该旋转借助马达动力传递齿轮系而传递至副轴25。这样传递的主驱动马达MOT1的驱动力借助末端传动齿轮系、第一差动机构D1，作为主驱动力而输出，并传递到前轮FWR。由此，能够进行如下所谓的串联行驶，即用发电机GEN将发动机ENG的驱动力全部转换为电力而运行。
<发动机行驶(发动机驱动模式)>
如图4所示，在发动机行驶中，使液压离合器CL为卡合状态，且发动机ENG的驱动力作为主驱动力而输出，并传递至前轮FWR。即，通过接合液压离合器CL，输入轴21的驱动力借助发动机动力传递齿轮系而传递至副轴25，并借助末端传动齿轮系、第一差动机构D1而传递至前轮FWR。由此，能够进行发动机行驶。在此，由于输入轴21和内周轴27始终借助发电机驱动用齿轮系而连接，因此发电机GEN的转子R随着内周轴27的旋转而旋转。因此，能够用发电机GEN进行发电，因此还能够进行如下所谓的并联行驶，即通过该发出的电力而使主驱动马达MOT1旋转，且将发动机ENG的驱动力和主驱动马达MOT1的驱动力作为主驱动力而输出。
[控制单元]
控制单元CTR是控制整个车辆V的控制单元，并且进行电压控制部VCU、第一逆变器INV1、第二逆变器INV2、第三逆变器INV3、发动机ENG、以及主驱动单元DU1的液压离合器CL的控制，且控制主驱动单元DU1及次驱动单元DU2的输入输出。
接着，参照图5至图7对控制单元CTR中的主驱动单元DU1及次驱动单元DU2的输出控制进行说明。
如图5所示，控制单元CTR具有：要求驱动力计算部71，其计算车辆V的要求驱动力Freq；驱动模式判定部73，其判定主驱动单元DU1的驱动模式为电力驱动模式还是发动机驱动模式；以及驱动力分配比率设定部75，其设定由主驱动单元DU1输出的主驱动力与由次驱动单元DU2输出的次驱动力之间的驱动力分配比率。
在控制单元CTR中输入有：表示从车速传感器81获得的车辆V的车速VP的信号、表示与从油门踏板开度传感器83获得的车辆V的驾驶员的油门踏板的操作对应的油门踏板开度AP的信号、以及表示从离合器传感器85获得的液压离合器CL处于卡合状态还是释放状态的离合器状态CLS的信号。
要求驱动力计算部71基于从车速传感器81获得的车速VP和从油门踏板开度传感器83获得的油门踏板开度AP，计算车辆V的要求驱动力Freq。
驱动模式判定部73基于从离合器传感器85获得的离合器状态CLS，判定主驱动单元DU1的驱动模式为电力驱动模式还是发动机驱动模式。具体而言，若液压离合器CL处于卡合状态，则判定为主驱动单元DU1的驱动模式为发动机驱动模式，若液压离合器CL处于释放状态，则判定为主驱动单元DU1的驱动模式为电力驱动模式。
驱动力分配比率设定部75根据从车速传感器81获得的车速VP、由要求驱动力计算部71计算的要求驱动力Freq、以及由驱动模式判定部73判定的主驱动单元DU1的驱动模式，设定由主驱动单元DU1输出的主驱动力与由次驱动单元DU2输出的次驱动力之间的驱动力分配比率。
驱动力分配比率设定部75存储图6所示的电力驱动模式时的驱动力分配比率映射91、以及图7所示的发动机驱动模式时的驱动力分配比率映射92。
在由驱动模式判定部73判定的主驱动单元DU1的驱动模式为电力驱动模式的情况下，驱动力分配比率设定部75基于从车速传感器81获得的车速VP、以及由要求驱动力计算部71计算的要求驱动力Freq，搜索电力驱动模式时的驱动力分配比率映射91，并设定由主驱动单元DU1输出的主驱动力与由次驱动单元DU2输出的次驱动力之间的驱动力分配比率。
在由驱动模式判定部73判定的主驱动单元DU1的驱动模式为发动机驱动模式的情况下，驱动力分配比率设定部75基于从车速传感器81获得的车速VP和由要求驱动力计算部71计算的要求驱动力Freq，搜索发动机驱动模式时的驱动力分配比率映射92，并设定由主驱动单元DU1输出的主驱动力与由次驱动单元DU2输出的次驱动力之间的驱动力分配比率。
控制单元CTR以由主驱动单元DU1输出的主驱动力与由次驱动单元DU2输出的次驱动力之间的驱动力分配比率成为由驱动力分配比率设定部75设定的驱动力分配比率的方式，进行电压控制部VCU、第一逆变器INV1、第二逆变器INV2、第三逆变器INV3、发动机ENG、以及主驱动单元DU1的液压离合器CL的控制，且控制主驱动单元DU1及次驱动单元DU2的输出。
如图6所示，电力驱动模式时的驱动力分配比率映射91将横轴设为车速VP，将纵轴设为要求驱动力Freq，且相对于各车速VP及各要求驱动力Freq，设定由主驱动单元DU1输出的主驱动力与由次驱动单元DU2输出的次驱动力之间的驱动力分配比率。本实施方式的电力驱动模式时的驱动力分配比率映射91示出了将要求驱动力Freq设为1时的由主驱动单元DU1输出的主驱动力的分配。
在图6中，在电力驱动模式时的驱动力分配比率映射91中，以灰度的浓淡示出了由主驱动单元DU1输出的主驱动力与由次驱动单元DU2输出的次驱动力之间的驱动力分配比率，越接近黑色，则主驱动力的分配比率越高，次驱动力的分配比率越低，且越接近白色，则主驱动力的分配比率越低，次驱动力的分配比率越高。关于以最浓的颜色示出的部分，将要求驱动力Freq设为1时的由主驱动单元DU1输出的主驱动力的分配为1.00，即驱动力分配比率为主驱动力∶次驱动力＝100∶0，仅主驱动单元DU1驱动。关于以白色示出的部分，将要求驱动力Freq设为1时的由主驱动单元DU1输出的主驱动力的分配为0.50，即驱动力分配比率为主驱动力∶次驱动力＝50∶50。电力驱动模式时的驱动力分配比率映射91中，相对于全车速VP及全要求驱动力Freq，将要求驱动力Freq设为1时的由主驱动单元DU1输出的主驱动力的分配为0.50以上，即驱动力分配比率设定为主驱动力的分配比率始终成为50％以上。
例如，当车速VP为60km/h，要求驱动力Freq为1200N时，将要求驱动力Freq设为1时的由主驱动单元DU1输出的主驱动力的分配为0.70，即驱动力分配比率为主驱动力∶次驱动力＝70∶30，当车速VP为40km/h，要求驱动力Freq为2000N时，将要求驱动力Freq设为1时的由主驱动单元DU1输出的主驱动力的分配为0.80，即驱动力分配比率为主驱动力∶次驱动力＝80∶20，当车速VP为120km/h，要求驱动力Freq为2000N时，将要求驱动力Freq设为1时的由主驱动单元DU1输出的主驱动力的分配为0.60，即驱动力分配比率为主驱动力∶次驱动力＝60∶40。
在电力驱动模式时的驱动力分配比率映射91中，相对于各车速VP及各要求驱动力Freq的驱动力分配比率基于车速VP和要求驱动力Freq，设定车辆V的电力损失成为最小的驱动力分配比率。
因此，驱动力分配比率设定部75基于车辆V的车速VP和车辆V的要求驱动力Freq，以车辆V的电力损失成为最小的方式设定驱动力分配比率，因此能够将主驱动单元DU1及次驱动单元DU2控制成车辆V的电力损失成为最小，能够提高车辆V的能量消耗效率。
如图7所示，发动机驱动模式时的驱动力分配比率映射92中，将横轴设为车速VP，将纵轴设为要求驱动力Freq，且相对于各车速VP及各要求驱动力Freq，设定由主驱动单元DU1输出的主驱动力与由次驱动单元DU2输出的次驱动力之间的驱动力分配比率。
在图7中，在发动机驱动模式时的驱动力分配比率映射92中，以灰度的浓淡示出了由主驱动单元DU1输出的主驱动力与由次驱动单元DU2输出的次驱动力之间的驱动力分配比率，越接近黑色，则主驱动力的分配比率越高，次驱动力的分配比率越低，且越接近白色，则主驱动力的分配比率越低，且次驱动力的分配比率越高。关于以最浓的颜色示出的部分，将要求驱动力Freq设为1时的由主驱动单元DU1输出的主驱动力的分配为1.00，即驱动力分配比率为主驱动力∶次驱动力＝100∶0，仅主驱动单元DU1驱动。
例如，当车速VP为60km/h，要求驱动力Freq为1200N时，将要求驱动力Freq设为1时的由主驱动单元DU1输出的主驱动力的分配为1.00，即驱动力分配比率为主驱动力∶次驱动力＝100∶0，当车速VP为40km/h，要求驱动力Freq为2000N时，将要求驱动力Freq设为1时的由主驱动单元DU1输出的主驱动力的分配为1.00，即驱动力分配比率为主驱动力∶次驱动力＝100∶0，当车速VP为120km/h，要求驱动力Freq为2000N时，将要求驱动力Freq设为1时的由主驱动单元DU1输出的主驱动力的分配为0.90，即驱动力分配比率为主驱动力∶次驱动力＝90∶10。
在发动机驱动模式时的驱动力分配比率映射92中，以主驱动力的分配比率成为90％以上的方式设定相对于各车速VP及各要求驱动力Freq的驱动力分配比率。
因此，在主驱动单元DU1的驱动模式为发动机驱动模式的情况下，驱动力分配比率设定部75以主驱动力的比率成为90％以上的方式设定驱动力分配比率，因此能够减小由主驱动马达MOT1及次驱动马达MOT2的工作引起的电力消耗，能够提高车辆V的能量消耗效率。
另外，如图6及图7所示，在以相同的车速VP和相同的要求驱动力Freq进行了比较的情况下，在电力驱动模式时的驱动力分配比率映射91中设定的驱动力分配比率与在发动机驱动模式时的驱动力分配比率映射92中设定的驱动力分配比率相比，次驱动力的分配比率相同或变大。因此，主驱动单元DU1的驱动模式为电力驱动模式时的驱动力分配比率与主驱动单元DU1的驱动模式为发动机驱动模式时的驱动力分配比率相比，次驱动力的分配比率相同或变大。
因此，主驱动单元DU1具备发动机ENG，主驱动单元DU1的驱动模式为电力驱动模式时的驱动力分配比率与主驱动单元DU1的驱动模式为发动机驱动模式时的驱动力分配比率相比，次驱动力的分配比率相同或变大，因此在主驱动单元DU1的驱动模式为电力驱动模式的情况下，能够进一步减小在主驱动单元DU1中产生的损失，能够提高车辆V的能量消耗效率。
图8表示发动机驱动模式时的驱动力分配比率映射92的变形例即发动机驱动模式时的驱动力分配比率映射93。
发动机驱动模式时的驱动力分配比率映射92也可以是发动机驱动模式时的驱动力分配比率映射93。
发动机驱动模式时的驱动力分配比率映射93中，相对于全车速VP及全要求驱动力Freq，将要求驱动力Freq设为1时的由主驱动单元DU1输出的主驱动力的分配为1.00，即驱动力分配比率为主驱动力：次驱动力＝100∶0，次驱动力的分配比率成为0，仅主驱动单元DU1驱动。
因此，在主驱动单元DU1的驱动模式为发动机驱动模式的情况下，驱动力分配比率设定部75以次驱动力的比率成为0的方式，设定驱动力分配比率，因此能够用简单的控制减少由主驱动马达MOT1和次驱动马达MOT2的工作而引起的电力消耗，能够用简单的控制提高车辆V的能量消耗效率。
这样，根据电力驱动模式时的驱动力分配比率映射91及发动机驱动模式时的驱动力分配比率映射92、93，在驱动力分配比率设定部75中，以主驱动力的分配比率始终成为50％以上的方式设定驱动力分配比率。
因此，主驱动单元DU1具备发动机ENG，驱动力分配比率设定部75以主驱动力的分配比率成为50％以上的方式设定驱动力分配比率，因此能够使发动机ENG、主驱动马达MOT1和次驱动马达MOT2进一步有效地工作，且能够提高车辆V的能量消耗效率。
以上，对本发明的实施方式进行了说明，但本发明并不限定于上述实施方式，能够适当进行变形、改良等。
例如，在本实施方式中，主驱动单元DU1输出主驱动力驱动前轮FWR，次驱动单元DU2输出次驱动力驱动后轮RWR，但也可以是，主驱动单元DU1输出主驱动力驱动后轮RWR，次驱动单元DU2输出次驱动力驱动前轮FWR。
另外，在本说明书中至少记载了以下事项。需要说明的是，尽管在括弧内示出了上述实施方式中的相应构成要素等，但并不限定于此。
(1)一种车辆(车辆V)，其中，
所述车辆具备：
主驱动单元(主驱动单元DU1)，其输出驱动前轮(前轮FWR)及后轮(后轮RWR)中的一方的主驱动力；
次驱动单元(次驱动单元DU2)，其输出驱动所述前轮及所述后轮中的另一方的次驱动力；以及
控制单元(控制单元CTR)，其控制所述主驱动单元及所述次驱动单元的输出，
所述主驱动单元具有至少一个主驱动用旋转电机(主驱动马达MOT1)，
所述次驱动单元具有至少一个次驱动用旋转电机(次驱动马达MOT2)，
所述控制单元具有对所述主驱动力与所述次驱动力之间的驱动力分配比率进行设定的驱动力分配比率设定部(驱动力分配比率设定部75)，
所述控制单元以所述主驱动力和所述次驱动力成为由所述驱动力分配比率设定部设定的所述驱动力分配比率的方式对所述主驱动单元及所述次驱动单元的输出进行控制，
所述驱动力分配比率设定部基于所述车辆的车速(车速VP)和所述车辆的要求驱动力(要求驱动力Freq)，以所述车辆的电力损失成为最小的方式设定所述驱动力分配比率。
根据(1)，驱动力分配比率设定部基于车辆的车速和车辆的要求驱动力，以车辆的电力损失成为最小的方式设定驱动力分配比率，因此能够以车辆的电力损失成为最小的方式对主驱动单元及次驱动单元进行控制，能够提高车辆的能量消耗效率。
(2)根据(1)所述的车辆，其中，
所述主驱动单元具备内燃机(发动机ENG)，
所述主驱动单元具有驱动模式，该驱动模式包括将所述主驱动用旋转电机的驱动力作为所述主驱动力而输出的电力驱动模式、和将所述内燃机的驱动力作为所述主驱动力而输出的发动机驱动模式，
所述驱动力分配比率设定部基于所述主驱动单元的所述驱动模式，设定所述驱动力分配比率，
所述主驱动单元的所述驱动模式为所述电力驱动模式时的所述次驱动力的分配比率与所述主驱动单元的所述驱动模式为所述发动机驱动模式时的所述次驱动力的分配比率相同，或者所述主驱动单元的所述驱动模式为所述电力驱动模式时的所述次驱动力的分配比率比所述主驱动单元的所述驱动模式为所述发动机驱动模式时的所述次驱动力的分配比率大。
根据(2)，主驱动单元具备内燃机，主驱动单元的驱动模式为电力驱动模式时的次驱动力的分配比率与主驱动单元的驱动模式为发动机驱动模式时的次驱动力的分配比率相同，或者主驱动单元的驱动模式为电力驱动模式时的次驱动力的分配比率比主驱动单元的驱动模式为发动机驱动模式时的次驱动力的分配比率大，因此当主驱动单元的驱动模式为电力驱动模式时，能够进一步减小在主驱动单元中产生的损失，能够提高车辆的能量消耗效率。
(3)根据(1)或(2)所述的车辆，其中，
所述主驱动单元具备内燃机(发动机ENG)，
所述驱动力分配比率设定部以所述主驱动力的分配比率成为50％以上的方式设定所述驱动力分配比率。
根据(3)，主驱动单元具备内燃机，驱动力分配比率设定部以主驱动力的分配比率成为50％以上的方式设定驱动力分配比率，因此能够使内燃机、主驱动用旋转电机、以及次驱动用旋转电机进一步有效地工作，能够提高车辆的能量消耗效率。

Claims (3)

1.一种车辆，其中，
所述车辆具备：
主驱动单元，其输出驱动前轮及后轮中的一方的主驱动力；
次驱动单元，其输出驱动所述前轮及所述后轮中的另一方的次驱动力；以及
控制单元，其控制所述主驱动单元及所述次驱动单元的输出，
所述主驱动单元具有至少一个主驱动用旋转电机，
所述次驱动单元具有至少一个次驱动用旋转电机，
所述控制单元具有对所述主驱动力与所述次驱动力之间的驱动力分配比率进行设定的驱动力分配比率设定部，
所述控制单元以所述主驱动力和所述次驱动力成为由所述驱动力分配比率设定部设定的所述驱动力分配比率的方式对所述主驱动单元及所述次驱动单元的输出进行控制，
所述驱动力分配比率设定部基于所述车辆的车速和所述车辆的要求驱动力，以所述车辆的电力损失成为最小的方式设定所述驱动力分配比率，
所述主驱动单元具备内燃机，
所述主驱动单元具有驱动模式，该驱动模式包括将所述主驱动用旋转电机的驱动力作为所述主驱动力而输出的电力驱动模式、和将所述内燃机的驱动力作为所述主驱动力而输出的发动机驱动模式，
所述驱动力分配比率设定部具有电力驱动模式时驱动力分配比率映射和发动机驱动模式时驱动力分配比率映射，
所述驱动力分配比率设定部在所述主驱动单元的所述驱动模式为所述电力驱动模式的情况下，基于所述电力驱动模式时驱动力分配比率映射来设定所述驱动力分配比率，
所述驱动力分配比率设定部在所述主驱动单元的所述驱动模式为所述发动机驱动模式的情况下，基于所述发动机驱动模式时驱动力分配比率映射来设定所述驱动力分配比率。
2.根据权利要求1所述的车辆，其中，
所述主驱动单元的所述驱动模式为所述电力驱动模式时的所述次驱动力的分配比率与所述主驱动单元的所述驱动模式为所述发动机驱动模式时的所述次驱动力的分配比率相同，或者所述主驱动单元的所述驱动模式为所述电力驱动模式时的所述次驱动力的分配比率比所述主驱动单元的所述驱动模式为所述发动机驱动模式时的所述次驱动力的分配比率大。
3.根据权利要求1或2所述的车辆，其中，
所述驱动力分配比率设定部以所述主驱动力的分配比率成为50％以上的方式设定所述驱动力分配比率。
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